Hot-air register.



2 SHEETS-SHEET 1.

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N 7 WM PATENTED MAR. 22, 17904.

.J. FINNBGAN. HOT AIR REGISTER 7 APPLICATION FILED MAY 1a. 1903.

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Patented March 22, 1904.

UNITED STATES PATENT OE rcE.

JOHN FINNEGAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO PHILADELPHIA HARDWVARE .AND MALLEABLE IRON WORKS, A CORPORATION OF PENNSYLVANIA.

HOT-AIR REGISTER.

SPECIFICATION forming part of Letters Patent No. 755,4:76, dated March 22, 1904-.

Application filed May 18, 1903. Serial No. 157,576. (No model.)

To all whom it may concern."

Be it known that I, JOHN FINNEGAN, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented new and useful Improvements in Hot-Air Registers, of which the following is a specification.

My invention consists of a hot-air register which is provided with means for preventing the dampers or valves from being improperly operated, a feature of importance in insane asylums, prisons, &c.

Figure 1 represents a front view of a register embodying my invention. Fig. 2 represents a view of a portion of the interior thereof on an enlarged scale. Fig. 3 represents an irregular vertical section on line :20 m, Fig. 2. Fig. 4 represents a vertical section of a portion on line 1 52 Fig. 2. Fig. 5 represents a horizontal section of a portion on line 2 2-, Fig. 2. Fig. 6 represents a horizontal section on line a a, Fig. 2.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates the frame of a register, and B designates the dampers or valves, which are mounted thereon by the journals B and provided with lugs C, from which project pins D, which move freely in slots E in the slide or sliding plate F, whereby by the motion of the latter as said pins play in said slots the dampers or valves will be opened and closed. In Fig. 3 I show on the side of said plate F the guiding-ribs B for said plate F, the slots which freely receive said ribs in the side of the frame being omitted from Fig. 2 for the purposes of clearness; but all of these parts, excepting the features of my invention applied thereto, are of usual tion.

On the slide F is the boss G, which is interiorly threaded and engaged by the screw H, the latter havinga neck J, which is journaled in the ear K, the latter projecting from the plate L, which is screwed or otherwise secured to the side of the frame A, said plate having also an ear M, in which is journaled construction and operathe post N, the outer end of which is squared and occupies the opening P in the side of the perforated face-plate Q of the register.

At one end of the screw H is secured the bevel-pinion R, and to the inner end of the post N is secured the bevel-pinion S, said pinions intermeshing.

It will be seen that'the free end of the post N, whiclris primarily unoccupied, is adapted to be engaged by a key or other implement, it being otherwise comparatively inconvenient of access and operation, said key, which is loosely fitted on the end of the post, being removed after the adjustment of the register, it being noticed that the opening P is small and adapted to receive only the collar of said key, which when applied to the squared end of the post closes said opening. When said key is removed, owing to the smallness of the opening P, said post cannot be grasped by hand, and thereby directly operated. Then by turning the post, owing to the gearing S R, the screw H will be rotated and motion accordingly imparted to the boss Or, and consequently to the slide F, and thus the dampers or valves will be moved to open or close the register, according to the direction of rotation of said post.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A hot-air register comprising a frame having a face-plate, a pivotal damper or valve ,mounted on said frame, asliding plate in said frame adapted to engage said valve to open and close the same and carrying an interiorlythreaded boss, a stationary plate on said frame and having an ear thereon, a screw journaled in said ear and engaging the threads of said boss, a gear-wheel on said screw, a post rotatably mounted on said stationary plate and adapted to have a separate key applied thereon and a gear-wheel on said post, said gear-Wheels intermeshing, and said faceplate having an opening in which the end of said post is accessible and in which said key may be introduced."

2. In a hot-air register, a frame having a face-plate, a damper 0r valve mounted therefitted thereon, a gear-Wheel connected with I on, a sliding plate on said frame engaging said post and a gear-Wheel connected With said said valve to open and close the register, said screw, said gear Wheels intermeshing, and plate having an interiorly-threaded boss theresaid face-plate having an opening in Which on, a stationary plate in said frame, the same the key-engaging end of said post is accessible.

having an ear thereon, a screw, the latter be- JOHN FINNEGAN. ing ournaled 1n said ear and engaging said Wltnesses: boss, a post mounted on said ear, its outer JOHN A. WIEDERSHEIM,

end being adapted to have a key removahly S. R. CARR. 

